retrievable
51Disc golf — Highest governing body Professional Disc Golf Association Registered players 52000+ total, 12859 current[1] …
52Robert Koch — Infobox Scientist name = Robert Koch imagesize=180px birth date = birth date|1843|12|11|mf=y birth place = Clausthal, Kingdom of Hanover death date = death date and age|1910|5|27|1843|12|11|mf=y death place = Baden Baden, Grand Duchy of Baden… …
53Laika — This article is about the Russian dog. For other meanings, see Laika (disambiguation). Laika Лайка In 1957, Laika became the first animal launched into orbit, paving the way for human spaceflight. This photograph shows her in a flight harness.… …
54Novel — For other uses, see Novel (disambiguation). Not to be confused with Novell. New novels in a Oldenburg bookshop, February 2009 …
55Space Shuttle Atlantis — Atlantis OV 104 Atlantis launching STS 122 mission to dock with the International Space Station OV designation OV 104 Country United States …
56Space Shuttle Endeavour — Endeavour OV 105 Space Shuttle Endeavour on launch pad 39A prior to mission STS 127, May 31, 2009 OV designation OV 105 Country United Sta …
57Signals intelligence — SIGINT redirects here. For the UNIX signal, see SIGINT (POSIX). RAF Menwith Hill, a large site in the United Kingdom, part of ECHELON and the UK USA Security Agreement. Signals intelligence (often contracted to SIGINT) is intelligence gathering… …
58Machine-readable medium — In telecommunication, a machine readable medium (automated data medium) is a medium capable of storing data in a machine readable format that can be accessed by an automated sensing device and capable of being turned into (practically in every… …
59Instant messaging — Pidgin 2.0 running under GNOME Instant Messaging (IM) is a form of real time direct text based chatting communication in push mode between two or more people using personal computers or other devices, along with shared clients. The user s text is …
60Pseudoephedrine — Systematic (IUPAC) name ( …
